--- title: "Chaz Mostert Set for Lexus IMSA Run at Detroit" description: "The Supercars champion will share Vasser Sullivan’s No. 15 Lexus RC F GT3 with Aaron Telitz in GTD Pro." url: https://sportopod.com/en-US/cluster/reigning-supercars-champion-chaz-mostert-joins-lexus-for-det-mougiccn published: 2026-05-16T03:25:39.73068+00:00 updated: 2026-05-16T14:03:16.481087+00:00 author: "Kostadin Stamboliev" publisher: "Pineido" site: "Sportopod" language: en topics: ["motorsport"] --- # Chaz Mostert Set for Lexus IMSA Run at Detroit > The Supercars champion will share Vasser Sullivan’s No. 15 Lexus RC F GT3 with Aaron Telitz in GTD Pro. Chaz Mostert will join Vasser Sullivan for the IMSA Detroit Grand Prix, co-driving the No. 15 Lexus RC F GT3 with Aaron Telitz in GTD Pro on May 30, Motorsport.com reported. The entry gives IMSA a sharp Supercars crossover for the 100-minute street race, but for now it remains a compact lineup update built on one reported source. Mostert arrives with a name that travels well beyond Australia. Motorsport.com identified him as the defending Supercars champion and noted that Detroit will be his first time competing in IMSA’s sprint race on the downtown street circuit. That matters for the entry list because the Detroit format leaves little room for easing in. It is short, tight, and built around track position, traffic timing, and clean handoffs. A one-off GTD Pro appearance in that setting asks a driver to get comfortable quickly with the car, the circuit, and the rhythm of IMSA’s multi-class street racing. This will not be Mostert’s first IMSA appearance. Motorsport.com reported that he has three prior Rolex 24 starts and won his class with BMW Team RLL in 2020. That detail gives the Detroit move useful context. He is not walking into IMSA cold. He has dealt with the series, GT machinery, and high-pressure endurance traffic before, even if this particular event is a different assignment. Daytona experience does not automatically translate to a Detroit sprint, but it does blunt the idea that this is a novelty booking with no sports-car base behind it. The Vasser Sullivan piece is just as important. Motorsport.com reported that Mostert will share the No. 15 Lexus RC F GT3 with Aaron Telitz, placing him directly into the GTD Pro field rather than a broader GTD customer-style cameo. Vasser Sullivan is the Lexus factory-aligned presence in IMSA’s GT ranks, so this is a clean, visible landing spot for a crossover driver. The available sourcing does not include a team statement in the provided material, nor does it include comments from Mostert, Telitz, Lexus, or IMSA. That keeps the story narrow. The hard news is the driver lineup, the car, the class, and the race date. For Supercars fans, the pull is obvious. Mostert is being reported as the defending series champion, and his move into a Lexus GT3 seat in Detroit creates a direct thread between Australian touring car attention and North American sports-car racing. For IMSA fans, the interest is more practical: Vasser Sullivan is adding a proven, adaptable driver to a sprint lineup on one of the calendar’s more compressed race weekends. Detroit punishes hesitation. It also tends to reward drivers who can manage close walls, restarts, and mixed-class timing without turning every pass into a risk event. The crossover angle should be kept in proportion. Motorsport.com’s report gives the essential facts, but the current source base is thin. There is no wider paddock reaction in the supplied material. There is no expanded explanation for why Mostert is in the seat, how the deal came together, or whether this points to future IMSA starts. Without those details, this is not yet a sweeping career pivot story. It is a notable Detroit lineup brief, sharpened by Mostert’s Supercars status and previous IMSA endurance success. Key facts: - Motorsport.com reported that Chaz Mostert will co-drive Vasser Sullivan’s No. 15 Lexus RC F GT3 with Aaron Telitz at Detroit. - The race is scheduled for May 30 and runs as a 100-minute IMSA sprint on the streets of Detroit. - Mostert is set to compete in the GTD Pro field, according to Motorsport.com. - Motorsport.com reported that Detroit will be Mostert’s first appearance in this IMSA street sprint. - Mostert has three prior Rolex 24 starts and earned a class win with BMW Team RLL in 2020, per Motorsport.com. The implication is straightforward: IMSA gets a recognizable international name in a factory-linked Lexus entry, while Supercars followers get a concrete reason to track the Detroit Grand Prix weekend. It adds flavor to the GTD Pro grid without requiring anyone to oversell the move. Mostert brings real sports-car experience, Telitz brings IMSA familiarity, and Vasser Sullivan gets a pairing that should draw attention across two fan bases. The competitive impact will depend on pace, execution, and how quickly Mostert settles into the Lexus on a circuit where small mistakes tend to become large outcomes. What's next: The next useful layer would be official confirmation from Vasser Sullivan, Lexus, IMSA, or Mostert, plus any detail on practice plans, driver expectations, or whether this is a standalone Detroit appearance. Until then, the story sits where the sourcing puts it: Mostert is set for the No. 15 Lexus RC F GT3 at Detroit with Telitz, giving the GTD Pro race a clean Supercars-to-IMSA crossover hook. ## Why this matters Mostert’s Detroit entry gives IMSA a crossover storyline with real substance, not just a guest-driver label. He carries Supercars championship credibility and prior IMSA endurance success, while Vasser Sullivan gains a high-profile partner for Telitz in a factory-linked Lexus. The caution is sourcing: the current reporting comes through Motorsport.com, with no supplied official quotes or wider paddock response. That makes it notable, but not yet a broad news cycle. ## Frequently asked ### Who will Chaz Mostert drive for at IMSA Detroit? Motorsport.com reported that Chaz Mostert will drive for Vasser Sullivan at the IMSA Detroit Grand Prix. He is listed in the No. 15 Lexus RC F GT3 alongside Aaron Telitz, with the entry competing in the GTD Pro field for the 100-minute street race. ### Is Detroit Chaz Mostert’s first IMSA race? No. Motorsport.com reported that Detroit will be Mostert’s first time in this specific IMSA sprint race, but not his first IMSA start. He has three previous Rolex 24 appearances and earned a class victory with BMW Team RLL in 2020. ### When is the IMSA Detroit race? The Detroit race is scheduled for May 30, according to Motorsport.com. It is a 100-minute IMSA sprint on the streets of Detroit, which makes the event a very different challenge from the longer endurance races where Mostert has previously appeared. ### Why is this entry getting attention? The attention comes from the crossover. Mostert is reported as the defending Supercars champion, and now he is joining a Lexus GTD Pro entry in IMSA. That gives Supercars fans a Detroit storyline and gives IMSA followers another proven driver to watch in a tight street-race format. ## Sources & Citations - [Reigning Supercars champion Chaz Mostert joins Lexus for Detroit IMSA race](https://www.motorsport.com/imsa/news/reigning-supercars-champion-chaz-mostert-joins-lexus-for-detroit-imsa-race/10818665/?utm_source=RSS&utm_medium=referral&utm_campaign=RSS-ALL&utm_term=News&utm_content=www) — Motorsport.com (2026-05-06) --- Cite: Chaz Mostert Set for Lexus IMSA Run at Detroit. Sportopod, 2026-05-16. https://sportopod.com/en-US/cluster/reigning-supercars-champion-chaz-mostert-joins-lexus-for-det-mougiccn